| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 64926 | Journal of Molecular Catalysis A: Chemical | 2015 | 10 Pages |
•Good photocatalytic effect of ZnO–SnO2/NCP in degradation of MBA/CNBA aqueous mixture.•Effect of ZnO–SnO2 ration on the activity of the supported semiconductors.•Changing the semiconductors’ band gaps by supporting.
The photocatalytic degradation of 4-methylbenzoic acid (MBA) and 2-chloro-5-nitro benzoic acid (CNBA) as aqueous solution mixture was studied using ZnO–SnO2/nano-clinoptilolite under UV irradiation. The clinoptilolite nano-particles (CNP) were obtained via ball-mill method and ion exchanged in Zn2+–Sn4+ aqueous solutions with different concentrations. The ion exchanged samples (Zn(II)–Sn(IV)/CNP) were calcined at 450 °C for 12 h to obtain ZnO–SnO2/CNP catalysts. XRD, DRS, FT-IR and TEM techniques were applied for characterization of samples. The experimental parameters which influenced degradation process were optimized and the optimum values were obtained as: 1 g L−1 of the photocatalyst, pH 5 and 5 mg L−1 of MBA and CNBA in the mixture. The degradation/ mineralization extents were confirmed by COD and HPLC.
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